In the absence of structural heart disease (including a normal ECG), syncope is most often of neurally mediated reflex origin or orthostatic hypotension. As a rule, reflex etiologies predominate in ...

Orthostatic hypotension, also known as postural hypotension, happens when blood vessels in the body fail to constrict (narrow) in response to gravity. This causes a decrease in blood pressure and ...

Orthostatic, or postural, hypotension is defined as a sudden drop in blood pressure resulting from a change in posture, such as when a person stands up quickly. When a person stands up after sitting ...

The problem, a brief but precipitous drop in blood pressure that causes lightheadedness or dizziness when standing up, is called orthostatic hypotension. By Jane E. Brody Orthostatic hypotension — to ...

November 27, 2001 -- Bethesda, Md. — The American Journal of Physiology: Heart and Circulatory Physiology, one of the 14 peer-reviewed journals published by the American Physiological Society (APS), ...

Postural orthostatic tachycardia syndrome (POTS) is a common heterogeneous form of cardiovascular autonomic dysregulation. The exact cause of POTS remains unclear. Patients typically complain of ...

The risk of orthostatic hypotension (OH) was found to be significantly increased with a variety of medications, particularly sympathetic inhibitors, according to the findings of a systematic review ...